tofsee | 31deb36fb3dedd632e9472f2b85c101889dba1133ad199a61cab3f8d89204bf1

Analysis

max time kernel
147s
max time network
146s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
19-08-2024 04:08

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General

Target

a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe
Size

13.5MB
MD5

a986ebd7bd52f4596e4b317b65e9bb53
SHA1

7e99414758f009fe8bb2c7683914f3591f3deff5
SHA256

31deb36fb3dedd632e9472f2b85c101889dba1133ad199a61cab3f8d89204bf1
SHA512

aa4c1181640300e377950a69898f9ded652d61295063cb75ec6b0ec10c5f65402d9a6510bd5862d94bd015752faccbf1534f6c11cbf7f49498b108cdb4e8eb5f
SSDEEP

12288:YaCPuKabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb7:guK

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

defeatwax.ru

refabyd.info

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\yutadqjv = "0"	svchost.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2984	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\yutadqjv\ImagePath = "C:\\Windows\\SysWOW64\\yutadqjv\\tnwgtwbn.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
1296	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2924	tnwgtwbn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2924 set thread context of 1296	2924	tnwgtwbn.exe	43

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
2340	sc.exe
2456	sc.exe
2876	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tnwgtwbn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1460 wrote to memory of 2564	1460	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	30
PID 1460 wrote to memory of 2564	1460	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	30
PID 1460 wrote to memory of 2564	1460	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	30
PID 1460 wrote to memory of 2564	1460	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	30
PID 1460 wrote to memory of 2312	1460	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	32
PID 1460 wrote to memory of 2312	1460	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	32
PID 1460 wrote to memory of 2312	1460	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	32
PID 1460 wrote to memory of 2312	1460	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	32
PID 1460 wrote to memory of 2340	1460	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	34
PID 1460 wrote to memory of 2340	1460	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	34
PID 1460 wrote to memory of 2340	1460	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	34
PID 1460 wrote to memory of 2340	1460	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	34
PID 1460 wrote to memory of 2456	1460	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	36
PID 1460 wrote to memory of 2456	1460	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	36
PID 1460 wrote to memory of 2456	1460	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	36
PID 1460 wrote to memory of 2456	1460	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	36
PID 1460 wrote to memory of 2876	1460	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	38
PID 1460 wrote to memory of 2876	1460	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	38
PID 1460 wrote to memory of 2876	1460	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	38
PID 1460 wrote to memory of 2876	1460	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	38
PID 1460 wrote to memory of 2984	1460	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	41
PID 1460 wrote to memory of 2984	1460	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	41
PID 1460 wrote to memory of 2984	1460	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	41
PID 1460 wrote to memory of 2984	1460	a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe	41
PID 2924 wrote to memory of 1296	2924	tnwgtwbn.exe	43
PID 2924 wrote to memory of 1296	2924	tnwgtwbn.exe	43
PID 2924 wrote to memory of 1296	2924	tnwgtwbn.exe	43
PID 2924 wrote to memory of 1296	2924	tnwgtwbn.exe	43
PID 2924 wrote to memory of 1296	2924	tnwgtwbn.exe	43
PID 2924 wrote to memory of 1296	2924	tnwgtwbn.exe	43

C:\Users\Admin\AppData\Local\Temp\a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1460
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yutadqjv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2564
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tnwgtwbn.exe" C:\Windows\SysWOW64\yutadqjv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2312
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yutadqjv binPath= "C:\Windows\SysWOW64\yutadqjv\tnwgtwbn.exe /d\"C:\Users\Admin\AppData\Local\Temp\a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2340
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yutadqjv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2456
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yutadqjv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2876
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
  2⤵
  - Modifies Windows Firewall
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:2984

C:\Windows\SysWOW64\yutadqjv\tnwgtwbn.exe
C:\Windows\SysWOW64\yutadqjv\tnwgtwbn.exe /d"C:\Users\Admin\AppData\Local\Temp\a986ebd7bd52f4596e4b317b65e9bb53_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2924
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1296

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tnwgtwbn.exe

Filesize
14.2MB

MD5
6da66a4da7938ed705e685ddf6f91ca7

SHA1
cb751a752f9c911818bbeb590285548117468c80

SHA256
4bf414870965c91e38c35471e8bdaa3b69db59c89440b839f8f9eb3995829e80

SHA512
797811262306ac23c2c09eb9e731be326ac4ff1808773f354b29325a67655cb5eef7353533f8c824c9b5dfe3adb3d6d4f647806d68b6268b7bb429d7b6befdac

Download Submit
memory/1296-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1296-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1296-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1296-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1296-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1460-1-0x0000000000250000-0x0000000000350000-memory.dmp

Filesize
1024KB

Download
memory/1460-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1460-3-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/1460-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1460-9-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/2924-17-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads